Education Secretary Michael Gove is to dismiss a Labour peer who chairs schools inspectorate Ofsted.
Baroness Morgan of Huyton, a former close aide to Tony Blair, has been told she will not be given a second three-year term at the watchdog, The Independent reported.
Although Lady Morgan is seen as a strong supporter of both Mr Gove's free schools and academies programmes, the paper said that the Education Secretary wanted a fresh face in the post.
The peer, whose current term is due to end this month, is expected to carry on until the autumn while a successor is found.
The moves comes amid tensions between Mr Gove and Ofsted. The Chief Inspector of Education, Sir Michael Wilshaw, was angered by media reports that two right wing thinks were drawing up plans to reform or even replace the organisation.
Mr Gove was forced to issue a statement voicing his full support for Sir Michael and promising to dismiss any aides if they were found to be part of any "dirty tricks" campaign.
The Education Secretary tonight paid tribute to Lady Morgan for her "tremendous contribution" to the work of Ofsted.
"She has brought great knowledge and insight, leading the board strongly through a period of significant change, both managing the smooth transition when there were changes in Chief Inspector, and leading the reforms to the inspectorate and its work," he said.
"I hope that she continues to play an active role in helping to shape the education landscape to improve standards for all children and young people."
Lady Morgan told The Independent: "Ofsted plays a crucial role in delivering independent inspection that is trusted by the public and particularly by parents. I am proud of helping lead Ofsted through a period of reform that has strengthened our inspections.
"Our tougher regime is driving improvements with more good schools and colleges than ever before.
"There is also a renewed focus on raising expectations in all parts of the country and for all children, including the most disadvantaged."